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<div id="basemapGallery"></div>
Alex,
this is a weird one. After I added the following code to one of your panes on the right the basemap gallery worked:<div id="basemapGallery"></div>
After that I closed the browser window and reopened your link and all the sudden your basemap started working.
Tim
Hi Alex,
It doesn't look like you are referencing the AccordionContainer module. This should fix the issue.